Dust canister



FIG. 1 is the front perspective view of a dust canister showing our new design;

FIG. 2 is the front view thereof;

FIG. 3 is the rear view thereof;

FIG. 4 is the left-side view thereof;

FIG. 5 is the right-side view thereof;

FIG. 6 is the top plan view thereof;

FIG. 7 is the bottom plan view thereof; and,

FIG. 8 is the bottom perspective view thereof.

The broken lines in the drawings show parts of the dust canister that form no part of the claimed design. 

CLAIM We claim the ornamental design for a dust canister, as shown and described. 